Which ion represents alpha particles?
Correct answer: D. He2+
- A. H+
- B. C+
- C. Na+
- D. He2+
Explanation
Option D is correct because an alpha particle consists of 2 protons and 2 neutrons, which corresponds to a helium nucleus. When a helium atom loses its 2 electrons, it becomes a positively charged helium ion, represented as He2+. Options A (H+), B (C+), and C (Na+) are incorrect as they represent different ions (hydrogen, carbon, and sodium, respectively) and do not have the structure or charge of an alpha particle. Only the helium ion accurately reflects the composition of an alpha particle.
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